Vrana Adminer up to 6.0.1 ClickHouse Driver clickhouse.php rootQuery auth_driver/auth_server server-side request forgery

Summaryinfo

A vulnerability categorized as critical has been discovered in Vrana Adminer up to 6.0.1. The impacted element is the function rootQuery of the file plugins/drivers/clickhouse.php of the component ClickHouse Driver. The manipulation of the argument auth_driver/auth_server results in server-side request forgery. This vulnerability is known as CVE-2026-100697. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Vrana Adminer up to 6.0.1. Affected is the function rootQuery of the file plugins/drivers/clickhouse.php of the component ClickHouse Driver. The manipulation of the argument auth_driver/auth_server with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Adminer 6.0.0 through 6.0.1, when the official ClickHouse driver plugin (plugins/drivers/clickhouse.php, rewritten in 6.0.0) is loaded, is vulnerable to pre-authentication server-side request forgery. An unauthenticated attacker can submit auth[driver]=clickhouse with auth[server] set to an arbitrary URL (for example http://127.0.0.1:18089), causing the Adminer server to issue an HTTP POST containing 'SELECT version()' to that host. In rootQuery(), if the target returns a status outside 200-299 (other than 401/403), the raw HTTP response body is assigned to the connection error and rendered on the login page, so the attacker receives the full response body of the internal service. This enables internal network/port reconnaissance and disclosure of sensitive information contained in internal error pages (stack traces, internal hostnames, file paths, configuration identifiers). Fixed in Adminer 6.0.2.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-100697 since 09/26/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

By approaching the search of inurl:plugins/drivers/clickhouse.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 6.0.2 eliminates this vulnerability.

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Productinfo

Vendor

• Vrana

Name

• Adminer

Version

• 6.0.0
• 6.0.1

Website

• Product: https://github.com/vrana/adminer/

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